SKU: 80407100314

Cobra Sport Ford Focus ST (Mk4) Turbo Back Exhaust

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Description

Cobra Sport Ford Focus ST (Mk4) Turbo Back ExhaustCobra Sport Ford Focus ST (Mk4) Turbo Back Exhaust Requires mandatory ECU reflash. Cobra Sport performance exhausts enhance the sound, looks and quality of your vehicle giving you the ultimate driving experience. Our sports exhausts range is fully guaranteed to give you assurance of our quality. This Ford Focus Mk4 ST turbo back performance exhaust is made in 3 76. 2mm pipework and fits from the Turbo backwards (turbo back) replacing the Downpipe,

Cobra Sport Ford Focus ST (Mk4) Turbo Back Exhaust

Requires mandatory ECU reflash.

Cobra Sport performance exhausts enhance the sound, looks and quality of your vehicle giving you the ultimate driving experience. Our sports exhausts range is fully guaranteed to give you assurance of our quality.

This Ford Focus Mk4 ST turbo back performance exhaust is made in 3″/76.2mm pipework and fits from the Turbo backwards (turbo-back) replacing the Downpipe, GPF, centre and rear sections.

The high flow sports cat version will enable you to pass a UK MOT emissions test or police road side checks. This exhaust is also sold with a de-cat for motorsport and off road use only and will NOT be able to pass a UK MOT emissions test or police road side checks.

The non-resonated option makes the system louder as it excludes the centre silencer and therefore, has a sportier exhaust note. This exhaust however, is also available as a resonated version (including centre silencer) which is a quieter option.

IMPORTANT: this exhaust removes the GPF filter and will require engine tuning at time of fitment to cancel the EML light.

Fitment to GPF equipped models is for motorsport and off road use only.

Cobra Sport Exhausts provide the performance exhaust solutions for the Mk4 Focus STs raced by the MB Motorsport accelerated by Blue Square and Motorbase Performance teams in the 2021 Kwik Fit British Touring Car Championship. This technical partnership allows us to test our products on track at the highest level of British Motorsport. The experience gained from the competitive track environment is fed back into all of our road going performance exhaust systems.

Press Release

The Ford Focus ST has long been a favourite amongst hot hatch fans, especially in the UK, ever since the launch of the Mk1 ST170 back in 2002. The Mk2 ST moved Ford’s hot hatch game on even further in 2005 when they fitted it with a thundering 2.5 5-Cylinder engine. And in 2012, despite losing a cylinder and half a litre of capacity to its predecessor, the Mk3 still sold in the thousands.

Every generation of Focus ST has had seemingly limitless tuning potential thanks to their horsepower-hungry engines and playful handling characteristics. Cobra Sport have enjoyed enormous success in this field, with their performance exhausts for both the Mk2 and Mk3 Focus STs being amongst the best-selling systems in the market.

Aiming to replicate this success, Cobra Sport are proud to announce their latest product range for the Ford Focus ST Mk4. Over the past few months, their Research and Development team have been hard at work developing an extensive range of performance exhaust systems that will cater to the needs of any fast Ford enthusiast.

Also available in the range is Cobra Sport’s Cobra’s unique ‘Venom’ range. For those who want a further improve sound levels, the Venom exhaust removes the rear silencer to offer the biggest sound increase whilst keeping a sporty exhaust tone (+8.5db in GPF-Back Venom configuration).

Like all Cobra Sport exhausts, the Mk4 Focus ST systems are TIG-welded from high-quality T304 stainless steel and the mandrel-bent pipework is a full 3in (76.2mm) in diameter for maximum sound and tuning potential.

With over 25 years in the performance exhaust industry, each Cobra Sport exhaust system is designed, manufactured and tested in Sheffield, the heart of the UK steel industry. Cobra Sport utilise TIG-welding techniques to ensure a flawless finish and quality that you can rely on.

Media

Ford Focus ST Mk4 Promotional Video (3″ GPF-Back Exhaust)

Cobra Sport Exhausts Ford promotional video.

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SKU: 80407100314

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4.8 ★★★★★
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C. COOK
Pawtucket, US
★★★★★ 5
Could not put this book down!
Format: Paperback
Binge read quality!! Finished in 2 days I was in a dilemma with this book. I couldn't wait to finish because it was so good, and yet I didn't want it to end, because it was so good. Staying up til 2:30am is the highest complement I can give to a book. Current day with Gothic feel. The story pulls you in immediately, and there is never a part where it feels dull, or that you need to skip through. Mysterious with plot twists, especially the end. I love how there were flashbacks from the past intertwined with present day. Gave a great backstory that only came together at the very end. Spicy for sure, and fit in perfectly with story. Great character development so that you could empathize with both of the main characters.. Lucian and Isa. Check Trigger warnings first! Highly recommend this book
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
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Rhonda
Birmingham, US
★★★★★ 4
Easy Read With a Wild Ending
Format: Audiobook
This was a really easy book to get pulled into. The writing flowed well and I flew through it without feeling bogged down at any point. While I don’t think it hit me as hard as some of Keri Lake’s other books, I was still invested the whole time and needed to know where everything was going. The atmosphere and mystery kept me hooked, but the ending? That twist completely caught me off guard. I honestly did not see that coming at all. Even though this one wasn’t my favorite from the author, the final turn alone made it worth the read.
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Reviewed in the United States on May 16, 2026
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Nikki
Louisville, US
★★★★★ 5
A masterfully written, stunning, gothic romance!
Format: Kindle
Lucian Blackthorne . . . my, my, my. Be still my romantic, sinful, dark heart. This male lead is one of the most addicting, flawed, sensual, erotic characters I've ever read. fanning myself I loved his dark, thrill-seeking, possessive, obsessive, carnal nature. Seriously, where can I find one? I digress. Lucian is a scarred man with secrets but that's only the tip of the proverbial iceberg. He's layered as deeply as an onion and it's addicting to peel back each one. He's a rich, powerful alpha male but there's so much to the man the town refers to as the Devil of Bonesalt. He's marked by loss, lies, a painful past, and the shadows of his choices in life. The Blackthorne name bears tragedy, turmoil, and an affiliation with the macabre. Isadora is a strong female lead. She's young but her life hasn't been easy. She's flawed, haunted by the past, and as much an outcast as her new employer, the enigmatic, elusive Lucian Blackthorne. Her new position brings her into the fold, learning the darkness, deceit, sadness, and crimes elicited against the Blackthorne family. It only takes one night, one passionate encounter with the master of salt and bones to change her life forever. Scandal, intrigue, tortured hero, suspense, thrills, mind-blowing twists, jaw-dropping secrets, and enough sensual bedroom scenes to set your kindle on fire. This is a MUST READ. One of the best reads of 2022 for me. LOVED it!!
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Reviewed in the United States on October 9, 2022
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Samantha Shaw Pellegrin
Pawtucket, US
★★★★★ 3
Solid 3.5 for me.
Format: Kindle
The story in the characters were unique which I liked. Never read a story like it. Kept me interested. It just wasn't as captivating as I hoped.
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Reviewed in the United States on May 25, 2026
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Erika
Alexandria, US
★★★★★ 4
🖤🖤4 Stars🖤🖤
Format: Kindle
“There are darknesses in life and there are lights. You are one of the lights...The light of all lights.” - Master of Salt & Bones. REVIEW: This book follows Isa who lives with her aunt on an island. Isa begins a new job as a caretaker for the dark, and mysterious Blackthorne family. A family who is disliked and even feared by the rest of the inhabitants of the island. However, as she grows closer to the man who they call the devil, Lucian Blackthorne, Isa sees for herself what the truth of Blackthorne manor really is. This book is a dark romance! Originally I was told it was fantasy, which I don’t agree with at all. It is more of an erotic, gothic feel with some mystery sprinkled in. The plot was very interesting and kept me intrigued. This book was also quite steamy, however, I felt those scenes were well done and didn’t take away from the rest of the book. Overall, the content in this book is quite dark and the backstories of the characters involve potentially triggering matters. Be aware to look these up if you feel like you need to. Overall, this is the first book I have read by Keri Lake, and I am excited to read more. SYNOPSIS: When I was a little girl, I dreamed a handsome knight would come and rescue me from my wretched mother. He'd ride up on his white steed and break the curse I've been fated to carry since the day I was born. Funny how things changed over time. How the fairy tale twisted into something far more crooked, darker than I ever imagined. In reality, my knight is scarred and broken, living alone in a castle of bones that overlooks the sea. He isn’t searching for me. He never was. Lucian Blackthorne is as cursed as I am, and equally shunned by the locals, the fishers of men, who believe him to be the devil in the flesh. Perhaps he is, with the way his amber eyes draw me in, ignite me like an infernal blaze. And the sins he whispers in my ear are as wickedly intoxicating as the man himself. Yet, his touch is heaven and his will is my weakness. He calls us forbidden, an unsalvageable tragedy, with no happy end. Maybe we are. But in this story, he’s the one who needs saving.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 11, 2020

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